railway RRB Technician Grade 3 Mock Test 2024 General Science Physics Work Power Energy

ଯଦି m ବସ୍ତୁତ୍ଵ ଥିବା ଏକ ବସ୍ତୁର ବେଗ vରୁ 2v କୁ ଦ୍ୱିଗୁଣିତ ହୁଏ, ତେବେ ଏହାର ଗତିଜ ଶକ୍ତି (K.E) ର ମୂଲ୍ୟ କେତେ ହେବ?

1
 ½ Ek
2
 4 Ek
3
  Ekରେ କୌଣସି ପରିବର୍ତ୍ତନ ହେବ ନାହିଁ
4
 2 Ek
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